Loose-leaf binder.



PATENTED JULY 25, 1905.

No. 795,585. v

' J. 0. DAWSON:

LOOSE LEA; BINDER; APPLICATION FILED DBO. 5, 1904.

mm Y J H Nw k m P n T 5m UNITED STATES PATENT OFFICE.

JAMES (J. DAWSON, OF WEBSTER GROVES, MISSOURI, ASSIGNOR TO SIE- BER & TRUSSELL MANUFACTURING COMPANY, A CORPORATION OF MISSOURI.

LOOSE-LEAF BINDER.

Patented July 25, 1905.

Application filed December 5, 1904- Serial No- 23 ,4 1-

To all whom, it may concern.-

Be it known that 1, JAMES C. DAWSON, a citizen of the United States, and a resident of Webster Groves, county of St. Louis, and State of Missouri, have invented certain new and useful Improvements in Loose-Leaf Binders, of which the following is a specification, and which are illustrated in the accompanying drawings, forming a part thereof.

This invention relates to that form of binder consisting of overlapping slidably-engaged back plates with upstanding side plates and telescopic binder-posts in the side plates and to the means for adjustably securing the two members of such a binder together, its object being to provide for a considerable range of movement of the binder members while securing themin a comparatively rigid manner, the whole being light, simple, and inexpensive.

The invention is illustrated in the accompanying drawings, in which Figure l is a plan view of the binder partly broken away, the usual hinged sides and covering material being omitted. Fig. 2 is an end view of the same, and Fig. 3 is a transverse section taken on the line 3 3 of Fig. 1.

The binder consists of two back plates and 11, each having an upstanding side plate 12 13, which is preferably of heavier material than the back plate, and end plates 14 15 and 16 17 The outer' plates 16 17 may be overturned at their top edges, as indicated at 18 19, to form ways within which the ends 14 15 may run. The rod 20 being oppositely threaded, as shown at 21 22, is journaled in suitable brackets, as 23, 24, and 25, projecting from one of the binder members and preferably from the side plate 13. One end of the rod 20 is squared, as shown at 26, to receive a key, and the corresponding end 16 of the binder is apertured for the insertion of the key. A pair of nuts 27 28 run one upon each of the threaded portions of the rod 20. A second rod 29, having a smooth surface, is secured within the angle of the other binder member by means of brackets, as 30 31 32, preferably projecting from the plate 12. A pair of blocks 33 34 are slidably mounted upon this rod. A pair of levers 35 36, crossed and pivoted together, as shown at 37, connect the nuts 27 28 with the blocks 33 34, each lever being pivotally attached to one of the nuts and one of the blocks.

A plurality of binder-posts are provided, preferably telescopic in form and comprise the tubular members 38 39 40, each secured in one of the side plates, and the studs or rods 41 42 43, each fixed in one of the side plates and so mounted as to enter one of the tubes.

A key being applied to the square end 26 of the rod 20, the latter may be turned and will thereby move the nuts 27 28 in opposite directions and will correspondingly slide the blocks 33 34 on the rod 29, widening or narrowing the binder. The blocks 33 34may, if desired, be given suflicient range of travel to allow the levers35 36 to be brought practically into alinement by the movement of the nuts in either direction. The oppositely-directed threads on the rod 20 secure quick action while providing ample power to compress the binder as forcibly as may be necessary.

I claim as my invention 1. In a loose-leaf binder, in combination, a

pair of relatively slidable back members, a pair of rods mounted one on each of said back members, one of such rods being rotatable and oppositely threaded adjacent its ends, a pair of blocks mounted and movable longitudinally on each rod, the blocks on the threaded rod being in threaded engagement therewith, and a pair of crossed levers pivoted together and each pivoted to one of each pair of blocks.

2. In a loose-leaf binder, in combination, a pair of relatively movable back members each having an upstanding leaf; a rod journaled within the angle of one member and having opposite screw-threads adjacent its ends; a smooth rod located within the angle of the other member; a pair of nuts carried by the threaded portions of the first-mentioned rod; a pair of blocks slidably mounted on the second-mentioned rod; and a pair of crossed levers pivoted together and each pivoted to one of the nuts and to one of the blocks.

JAMES C. DAWSON. Witnesses:

EDWIN W. MILLS, F. W. RESGEN. 

